What is the off-grid energy storage system?
Off-grid energy storage system is a device that does not rely on the grid-connected system to supply power to the equipment. One of the off-grid energy storage system is battery energy storage system which uses lithium battery as energy storage carrier to store electric energy within a certain period of time and supply electric energy within a certain period of time, and the electric energy provided has the functions of smooth transition, peak shaving and valley filling, frequency regulation and voltage regulation. Several solar panels plus hybrid inverter with controller and wall-mounted energy storage battery constitute a simple all-in-one energy storage system.
What is the function of off-grid energy storage system?
Energy storage can ensure the stability of the system, photovoltaic power plant system, photovoltaic output power curve and load curve are quite different, and both have unpredictable fluctuation characteristics, through the energy storage and buffering of the energy storage system so that the system can still operate at a stable output level even under the condition of rapid load fluctuations.
Energy is used for backup, and the off-grid energy storage system can play a backup and transitional role in the case of photovoltaic power generation cannot operate normally, such as at night, when the battery array cannot generate electricity on rainy days, the amount of energy storage capacity depends on the demand of the load.
Improve power quality and reliability, energy storage system can also prevent voltage spikes on the load, voltage drops, external interference caused by grid fluctuations on the system caused by large impact, the use of enough energy storage system can ensure the quality and reliability of power output.
How to choose energy storage battery?
In the off-grid energy storage system, choosing an energy storage battery is the key part. So how to choose an efficient energy storage battery? First of all, users need to choose the type of energy storage battery, we can provide wall-mounted energy storage battery, rack type energy storage battery, integrated energy storage battery. If you choose a wall-mounted energy storage battery, customers need to consider the load-bearing of the wall, the available installation space, and whether the length, width and height of the battery system will be limited in this space. If you choose a rack-mounted energy storage battery, customers need to consider the space and use environment, temperature and humidity. Secondly, The user needs to select the battery capacity. According to the length of power off × the wattage of the household appliances to be used. We can offer 5kwh to 30kwh energy storage battery.
